CN1319867A - Plasma indication panel - Google Patents
Plasma indication panel Download PDFInfo
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- CN1319867A CN1319867A CN00137369A CN00137369A CN1319867A CN 1319867 A CN1319867 A CN 1319867A CN 00137369 A CN00137369 A CN 00137369A CN 00137369 A CN00137369 A CN 00137369A CN 1319867 A CN1319867 A CN 1319867A
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- fluorescence coating
- plasma display
- green
- display according
- brightness
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J11/00—Gas-filled discharge tubes with alternating current induction of the discharge, e.g. alternating current plasma display panels [AC-PDP]; Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel
- H01J11/10—AC-PDPs with at least one main electrode being out of contact with the plasma
- H01J11/12—AC-PDPs with at least one main electrode being out of contact with the plasma with main electrodes provided on both sides of the discharge space
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J11/00—Gas-filled discharge tubes with alternating current induction of the discharge, e.g. alternating current plasma display panels [AC-PDP]; Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel
- H01J11/20—Constructional details
- H01J11/34—Vessels, containers or parts thereof, e.g. substrates
- H01J11/42—Fluorescent layers
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- Plasma & Fusion (AREA)
- Gas-Filled Discharge Tubes (AREA)
Abstract
A PDP that can maintain favorable color balance is provided. In the PDP which is equipped with back phosphor layers of the three colors red, green, and blue in a back panel, front phosphor layers are provided in a front panel respectively in opposition to back phosphor layers other than the back phosphor layer whose luminance degrades fastest with time among the red, green, and blue back phosphor layers. These front phosphor layers are prone to luminance deterioration caused by ultraviolet radiation or ion bombardment, and therefore accelerate the luminance degradation speeds of their opposite back phosphor layers. Accordingly, the luminance of light emitted from each of the two combinations of the front and back phosphor layers is brought to be more balanced with the luminance of light emitted from the back phosphor layer with the highest luminance degradation speed. Hence the PDP can maintain favorable color balance over a long time.
Description
The present invention relates to a kind of plasma display that is used for display unit etc., the plasma display of fabulous look equilibrium particularly can be provided.
At numerous colour display devices that are used for displayed image on computer, TV etc., plasma display (hereinafter in the middle of for " PDP ") has become the focus of colour display device, and it can realize not only thin but also light large scale display.
Fig. 1 is part perspective and the cutaway view of traditional typical PDP.
In this PDP, front glass substrate 11 and back glass substrate 12 are provided with relative to each other, are provided with barrier ribs 19 therebetween.On the surface of back glass substrate 12, a plurality of strip show electrodes 13 and a plurality of strip reading scan electrode 14 (only illustrating two pairs among the figure) alternately are arranged in parallel mutually at front glass substrate 11.A plurality of show electrodes 13 and a plurality of reading scan electrode 14 cover the insulating barrier of being made by lead glass etc. 15 again, further cover and go up MgO diaphragm 16.Form front panel thus.
On the surface of front glass substrate 11, a plurality of strip address electrodes 17 (only illustrating four among the figure) are arranged in parallel in back glass substrate 12, and the insulating barrier of being made by lead glass etc. 18 is formed on the glass substrate 12 of back to cover many address electrodes 17.Barrier ribs is formed between the adjacent address electrode 17.At last, back fluorescence coating 20R, 20G and the 20B with three kinds of colors red (R), green (G) and blue (B) is coated to the gap between the adjacent barrier ribs 19 on the insulating barrier 18.So form rear board.
Between front glass substrate 11 and the back glass substrate 12, many to electrode 13 and 14 with the crossing discharge space 21 of many address electrodes 17 in the zone be Luminescent cases.To be full of in the discharge space 21 with neon be Main Ingredients and Appearance, be the inert gas of buffer gas with the xenon of trace.
For displayed image on this PDP, between the electrode pair 13 and 14 of Luminescent cases, bring out continuous discharge to send ultraviolet light.This ultraviolet excitation fluorescence coating 20R, 20G and 20B, the result produces the visible light of three kinds of basic colors of red, green, blue, passes through additive process again, thereby obtains panchromatic demonstration.
The structure that is used for back fluorescence coating 20R, the 20G of this PDP and 20B should make and can keep gratifying look equilibrium when display white.At this, because the component of red, green and blue colour fluorescent powder is different, the brightness (luminous intensity) of institute later fluorescence coating 20R, 20G and 20B initial condition is different.For making the PDP initial condition keep the look equilibrium and avoiding colour temperature to descend, should take a kind of technology to make the back fluorescence coating 20B of low-light level be wider than back fluorescence coating 20R and 20G, perhaps carry out signal processing to reduce the continuous discharge pulse of back fluorescence coating 20R and 20G, so that utilize the brightness of blue light to come the brightness of balance ruddiness and green glow by the PDP drive circuit.
But, this PDP has the following problem relevant with colour temperature.
At first, because factors such as the ion bombardment of interdischarge interval and ultraviolet radiation, along with the past of PDP fluorescent lifetime, the mis-behave of back fluorescence coating 20R, 20G and 20B.The brightness that this means each back fluorescence coating all reduces in time.At this, because the component difference, the decrease speed of fluorescence coating is also different after three kinds, and As time goes on, the difference of fluorescence coating brightness slippage is also very big after every kind.This makes the look equilibrium that also can destroy this PDP when display white, and causes colour temperature to descend.The look equilibrium can be adjusted to a certain degree although carry out signal processing, the look equilibrium is remained unchanged with the PDP drive circuit.
Secondly, the signal processing technology that above-mentioned tradition adopts is by the brightness of restriction use redness and green fluorescence layer, comes brightness of balance ruddiness and green glow brightness with lower blue light brightness, to improve PDP initial condition colour temperature.And restriction uses the brightness meeting of redness and green emitting phosphor to cause PDP brightness to descend.
First purpose of the present invention is to provide a kind of can keep lustful balanced PDP for a long time.
The PDP that provides a kind of initial condition brightness to be improved is provided second purpose of the present invention.
The back fluorescence coating that descends in time the fastest back fluorescence coating with respect to brightness in the fluorescence coating of red, green and blue back is provided with preceding fluorescence coating respectively, can realize first purpose.Because under ultraviolet irradiation and ion bombardment situation, the brightness of preceding fluorescence coating is easy to descend, accelerate the brightness decrease speed of back fluorescence coating relatively with it with this.Therefore, utilize the brightness further brightness decrease speed of the back fluorescence coating that combines with preceding fluorescence coating of balance of the fastest back fluorescence coating brightness decrease speed that descends, the look equilibrium maintenance that also can make PDP for a long time.
With respect to the back fluorescence coating the back fluorescence coating that the original intensity application factor is minimum in the fluorescence coating of red, green and blue back preceding fluorescence coating is set respectively, can realizes second purpose.So the result who does can make the brightness of the back fluorescence coating that combines with preceding fluorescence coating improve, thereby makes the brightness of PDP initial condition improve, and can keep gratifying look equilibrium simultaneously again.
Fluorescence coating and set the transmission of visible light of fluorescence coating before each according to the original intensity of its relative back fluorescence coating before being provided with respectively with respect to red, green and blue back fluorescence coating can obtain high brightness and look balanced gratifying PDP.
At this moment, the spherical fluorescent grain that hydrothermal synthesis method is obtained is used for this front and back fluorescence coating, can further strengthen the brightness of PDP.
By the explanation below in conjunction with relevant drawings, these purposes of the present invention, advantage and feature will become clearer, and relevant drawings has provided one particular embodiment of the present invention, in the drawings:
Fig. 1 is part perspective and the cutaway view of traditional typical PDP;
Fig. 2 is the floor map according to the PDP of first embodiment of the invention, has wherein removed the front glass substrate;
Fig. 3 is part perspective and the cutaway view of PDP among first embodiment;
Fig. 4 is according to first embodiment, block diagram with display unit of PDP;
Fig. 5 is the part amplification view that PDP shown in Fig. 3 looks along direction y;
Fig. 6 is the part amplification view that PDP shown in Fig. 3 looks along direction x;
Fig. 7 is the brightness decline figure that has only ruddiness, green glow and blue light among the PDP of back fluorescence coating;
Fig. 8 has only the brightness decline figure of ruddiness among the PDP of preceding fluorescence coating or back fluorescence coating;
Fig. 9 is the brightness decline figure of ruddiness, green glow and blue light among the first embodiment PDP;
Figure 10 is part perspective and the cutaway view according to the PDP of second embodiment of the invention; And
It is used when being the blue-fluorescence particle that is obtained by hydrothermal synthesis method that shown in Figure 11 is before blue in the fluorescence coating, blue before the thickness of fluorescence coating and the relation between the blue light relative brightness.
It below is the explanation of the embodiment of the invention.
First embodiment
PDP to first embodiment of the invention is described with the display unit that PDP is housed below with reference to accompanying drawing.
(structure of PDP100)
Fig. 2 is the floor map that PDP100 removes front glass substrate 101, and Fig. 3 is partial perspective and the cutaway view of PDP100.Some show electrodes 103, reading scan electrode 104 and address electrode 108 have been omitted in attention for the sake of simplicity in Fig. 2.Describe with reference to the structure of these accompanying drawings PDP100.
In Fig. 2, PDP100 is made of front glass substrate 101 (not shown), back glass substrate 102, n bar show electrode 103, n bar reading scan electrode 104, m bar address electrode 108 and gas-tight seal layer 121 (the oblique shadow region among the figure) substantially.N bar show electrode 103, n bar reading scan electrode 104 and m bar address electrode 108 form one three electrode matrix structure together. Electrode pair 103 and 104 and address electrode 108 zone of intersecting be called box (cell).
In Fig. 3, front glass substrate 101 is relative with back glass substrate 102, and the bar shaped barrier ribs is arranged at therebetween.
Show electrode 103 and reading scan electrode 104 all are made from silver, and are strip and alternately are set in parallel on the surface of front glass substrate 101 in the face of back glass substrate 102.
Preceding fluorescence coating 107R and 107G are made of the fluorescent grain that sends corresponding redness (R) and green (G) light.These preceding fluorescence coating 107R and 107G be arranged on the protective layer 106 with back glass substrate 102 on back fluorescence coating 111R relative with 111G.
In addition, back glass substrate 102, address electrode 108, visible light reflecting layer 109 barrier ribs 110 and back fluorescence coating 111R, 111G and 111B constitute rear board.
Visible light reflecting layer 109 is made by the insulating glass that contains titanium oxide etc., is formed on the surface of back glass substrate 102 with overlay address electrode 108.Visible light reflecting layer 109 is used to reflect the visible light that is produced by back fluorescence coating 111R, 111G, 111B, simultaneously as insulating barrier.
By gas-tight seal layer 121 front panel and rear board are sealed along its edge.Discharge gas (as the mist of helium and xenon) fills in the discharge space 122 that is formed between the front and back panel.
The PDP100 of this structure and the PDP drive unit 150 shown in Fig. 4 coupled together just constituted display unit 160 with PDP.For the display unit 160 with PDP is driven, PDP100 is connected on display driver circuit 153, reading scan drive circuit 154 and the address driving circuit 155 in the middle of the PDP drive unit 150.Under the control of controller 152, voltage is applied to and will carries out the address discharge therebetween to impel on reading scan electrode 104 in the luminous box and the address electrode 108.After having gathered the wall electric charge, pulse voltage is applied on every pair of show electrode 103 and the reading scan electrode 104, has gathered the continuous discharge of the box of wall electric charge with startup.Because continuous discharge has produced ultraviolet ray, activate back fluorescence coating (with preceding fluorescence coating) and send visible light, box is luminous as a result.By each look box whether luminous among the control PDP100, come color image display.At this moment, the uneven structure of above-mentioned box spacing is attached among this PDP100, the look equilibrium can be adjusted to a certain degree.And the uneven structure of this box spacing is not enough to regulate all sidedly the look equilibrium.Balanced and improve the colour temperature of PDP100 in order to regulate look, preferably carry out sort signal and handle continuous discharge umber of pulse with these three kinds of colors of relative minimizing.
(structure of front panel)
Front-panel structure as feature of the present invention will be described below.
Fig. 5 is the part amplification profile that PDP100 shown in Fig. 3 looks along direction y.
As shown in the figure, the preceding fluorescence coating 107R that is arranged on the front panel is relative with 111G with back fluorescence coating 111R with 107G, and do not have preceding fluorescence coating relative with back fluorescence coating 111B, in back fluorescence coating 111R, 111G and 111B, the brightness of back fluorescence coating 111B descends the fastest in time.Thus, preceding fluorescence coating 107R and 107G preferably by particle diameter enough little and for spherical, utilize the synthetic fluorescent grain that obtains of hydro-thermal to constitute.When using particle diameter little and when be the fluorescent grain of sphere, the whole surface area that is used for luminous fluorescent grain is greater than the situation with non-spherical fluorescent grain.Therefore, preceding fluorescence coating 107R (107G) uses spherical fluorescent grain, can increase the whole surface area that is used for luminous fluorescent grain, the illumination efficiency of fluorescence coating 107R and 107G before can improving simultaneously.To be elaborated to used fluorescent grain among preceding fluorescence coating 107R and the 107G below.
Fig. 6 is the amplification profile of looking along direction x along the PDP100 that the b-b ' line among Fig. 5 is cut open.
In the drawings, with show electrode 103 and reading scan electrode 104 corresponding protective layer 106 surface portions on gapped 107a.These gaps 107a is exposed in the discharge space 122 electrode 103 and 104, thereby can carry out continuous discharge betwixt.
(effect of preceding fluorescence coating 107R and 107G)
The show electrode 103 and the reading scan electrode 104 that carry out continuous discharge are nearer than back fluorescence coating 111R, 111G and 111B in rear board from preceding fluorescence coating 107R and 107G.This has just caused the duration of work at PDP100, and preceding fluorescence coating 107R (107G) is easier to be subjected to continuous discharge produced between show electrode 103 and the reading scan electrode 104 the ultraviolet irradiation and the influence of ion bombardment than back fluorescence coating 111R (111G).Before this shows after the brightness ratio of fluorescence coating 107R (107G) brightness of fluorescence coating 111R (111G) descend fast.Fluorescence coating 107R (107G) had accelerated red (green) brightness of being sent in time and the speed that descends before brightness descended faster.In other words, when after fluorescence coating 111R (111G) and preceding fluorescence coating 107R (107G) all sometimes, red (green) brightness decrease speed red (green) brightness decrease speed of (speed that hereinafter brightness is descended in time is referred to as " brightness decrease speed ") when having only back fluorescence coating 111R (111G).Therefore, with respect to back fluorescence coating 111R and 111G and preceding fluorescence coating is not set, can makes the brightness decrease speed of the brightness decrease speed of red and green light near blue light with respect to the fastest back fluorescence coating 111B that descends of brightness in the fluorescence coating after three kinds.As a result, even PDP100 is luminous for a long time, the brightness decrease speed of red, green and blue light also can keep balance more or less, thereby makes the colour temperature (look equilibrium) of PDP100 big variation can not take place in time.To carry out more careful research to the brightness decrease speed of red, green and blue light below.
Shown in Figure 7 is the difference of back fluorescence coating 111R, 111G and 111B brightness decrease speed.This figure provided when PDP has only back fluorescence coating 111R, 111G and 111B, with respect to the relative brightness of red, the green and blue light of fluorescent lifetime.
With following known fluorescer as red, green and blue look fluorescer.
Red fluorescence agent: (Y, Gd) BO
3: Eu
Green fluorescence agent: Zn
2SiO
4: Mn
Blue-fluorescence agent: BaMgAl
10O
17: Eu
Alleged herein relative brightness refers to the brightness with respect to every kind of fluorescer original intensity.
As shown in FIG., after PDP was luminous 5000 hours, ruddiness brightness descended 3%, and green glow brightness descends 10%, and blue light brightness descends 25%.The brightness decrease speed of this proof blue light is the fastest in three kinds of colors.
Shown in Figure 8 is the difference of preceding fluorescence coating 107R and back fluorescence coating 111R brightness decrease speed, is example with the slowest ruddiness of brightness decline in three kinds of colors.Shown in the figure is that PDP has preceding fluorescence coating 107R and the PDP ruddiness relative brightness with respect to fluorescent lifetime when having back fluorescence coating 111R.With (Y, Gd) BO
3: Eu is as the red fluorescence agent.
Under the situation of back fluorescence coating 111R, ruddiness brightness only descends 3% after luminous 5000 hours.And under the situation of preceding fluorescence coating 107R, ruddiness brightness descends 20% after 5000 hours.Even this explanation is for the slowest red fluorescence agent of brightness decline in three kinds of fluorescers, brightness descends also very fast relatively in time in preceding fluorescence coating.
By The above results as can be known, current fluorescence coating and back fluorescence coating all sometimes, the brightness decrease speed is fast when having only back fluorescence coating.
Shown in Figure 9 is when PDP has back fluorescence coating 111R, 111G and 111B and preceding fluorescence coating 107R with 107G, red, green and blue light brightness decrease speed different.This figure has provided the relative brightness of every kind of light with respect to fluorescent lifetime.
As shown in the figure, ruddiness brightness descends 12% after luminous 5000 hours.Green glow brightness descends 12% after 5000 hours in addition.When comparing with Fig. 7, clearly, the brightness decrease speed of ruddiness and green glow was all accelerated when preceding fluorescence coating 107R and 107G were arranged.
(transmission of visible light of preceding fluorescence coating 107R and 107G)
When on the current glass substrate 101 preceding fluorescence coating 107R (107G) being arranged, the visible light that sends from back fluorescence coating 111R (111G) can't pass through front glass substrate 101.This makes PDP100 brightness descend.For fear of this problem, the transmission of visible light of fluorescence coating 107R (107G) is higher than the transmission of visible light of back fluorescence coating 111R (111G) before preferably making.Intergranular pore amount by changing thickness and/or preceding fluorescence coating 107R (107G) (representative of intergranular pore amount among preceding fluorescence coating 107R (107G) on the unit are ratio of the shared volume in space) can improve the transmission of visible light of preceding fluorescence coating 107R (107G).More particularly, by reducing bed thickness and/or increasing the transmission of visible light that the intergranular pore amount can improve preceding fluorescence coating 107R (107G).In this way transmission of visible light is regulated, can be regulated the brightness of red (green) light, thus the colour temperature of scalable PDP100 self.Optimum state to the fluorescer that is used for these fluorescence coatings describes below.
In the PDP100 of first embodiment, preceding fluorescence coating 107R and 107G and back fluorescence coating 111R and 111G are oppositely arranged, and unmatched fluorescence coating with three kinds after brightness decline is the fastest in the fluorescence coating back fluorescence coating 111B be oppositely arranged.The result who does like this can make the brightness decrease speed of red, green and blue light obtain further balance, thereby the colour temperature of PDP100 can not descended greatly along with fluorescent lifetime.
This embodiment describes in the example to back fluorescence coating 111R and 111G provide preceding fluorescence coating, and does not provide preceding fluorescence coating for the fastest back fluorescence coating 111B of brightness decrease speed.Also can only provide preceding fluorescence for the slowest back fluorescence coating 111R of brightness decrease speed.The colour temperature of PDP100 can be descended thus and be suppressed to than low degree.In addition, if by reduce bed thickness or additive method reduce its volume make blue before the transmission of visible light of fluorescence coating be higher than the transmission of visible light of other preceding fluorescence coatings, then can provide preceding fluorescence coating for all back fluorescence coating 111R, 111G and 111B.Thus, also the colour temperature decline of PDP100 can be suppressed to than low degree.
(manufacture method of PDP100)
Manufacture method below with reference to Fig. 2 and 3 couples of PDP100 describes.
(making of front panel)
At first, on front glass substrate 101, alternately form n bar bar shaped show electrode 103 and n bar bar shaped reading scan electrode 104 in parallel to each other.On the n of front glass substrate 101 bar show electrode 103 and n bar reading scan electrode 104, form insulating glass layer 105 again.On this insulating glass layer 105, form protective layer 106 afterwards again.
At this, n bar show electrode 103 and n bar reading scan electrode 104 all are made from silver, and are will be coated in as the silver coating of electrode material on the surface of front glass substrate 101 by silk screen printing then to fire formation again.
Insulating glass layer 105 is to be coated on the surface of front glass substrate 101, to fire the scheduled time (20 minutes) again under predetermined temperature (560 ℃) and form by the coating that silk screen printing will contain lead glass, thereby has predetermined thickness (about 20 μ m).The coating that contains lead glass is generally used PbO (70% weight percent), B
2O
3(15% weight percent), SiO
2(10% weight percent), Al
2O
3The mixture of (5% weight percent) and a kind of organic binder bond (10% is dissolved in the ethyl cellulose of alpha-terpineol).Organic binder bond is by obtaining resin dissolves in a kind of organic solvent.Can replace ethyl cellulose and alpha-terpineol with resin such as acrylic resin and organic solvent such as diethylene glycol (DEG)-butyl ether.And, a kind of dispersant such as triglycerides can also be mixed in this organic binder bond.
Subsequently; utilize silk screen printing to be coated on the surface of protective layer 106 by the gluey fluorescent ink that red (R) (green (G)) look fluorescent grain and organic binder bond constitute; under 400 to 590 ℃ temperature, the said goods is fired again, destroyed organic binder bond.As a result, fluorescence coating 107R (107G) before fluorescent grain is combined together to form.Also available photolithography replaces silk screen printing.
So just finished the making of front panel.
(making of rear board)
At first, will be coated to as the silver coating of electrode material by silk screen printing on the surface of back glass substrate 102, and this product be fired formed the m bar address electrode of in a row arranging 108 again.The coating that will contain lead glass by silk screen printing is coated on the glass substrate 102 lip-deep m bar address electrodes 108 of back again, to form visible light reflecting layer 109.Further, the coating that will contain similar lead glass material by silk screen printing, is fired this product and is formed barrier ribs 110 to the surface of visible light reflecting layer 109 by the preset space length repetitive coatings again.With these barrier ribs 110, be partitioned into a plurality of and each Luminescent cases corresponding discharge space 122 along direction x discharge space.
Form after the barrier ribs 110, to be coated to the side of adjacent barrier ribs 110 by the gluey fluorescent ink that red (R) (green (G), blue (B)) look fluorescent grain and organic binder bond constitute and expose on the surface of the visible light reflecting layer 109 between the adjacent barrier ribs 110, under 400 to 590 ℃ temperature, the said goods is fired again, destroyed organic binder bond.As a result, fluorescent grain is combined together to form back fluorescence coating 111R (111G, 111B).With preceding fluorescence coating 107R and the same reason of 107G, the fluorescent grain that back fluorescence coating preferably uses hydrothermal synthesis method to obtain.
So just finished the making of rear board.
(the sealing front and back panel is to finish PDP100)
To the front panel made and rear board carry out lamination so that n to electrode 103 and 104 and m bar address electrode 108 intersect.Seal glass is arranged between the front and back panel around front and back panel, and fires 10 to 20 minutes under about 450 ℃ of temperature, to form gas-tight seal layer 121.Thereby front and back panel is fixed together.In discharge space, find time to form high vacuum (as 1.1 * 10
-4Pa) time, the discharge gas (as helium-xenon or neon-xenon inert gas) of certain pressure is filled in the discharge space 122.So just, made PDP100.
Fluorescent ink and fluorescent grain
In above-mentioned manufacturing process, fluorescent grain, binding agent and the solvent of every kind of color become the cement of 15 to 3000 centipoises together, prepare the fluorescent ink that is coated on front panel and the rear board.Surfactant, silica, dispersant (0.1 to 5% percentage by weight) etc. can be added in this fluorescent ink in case of necessity.
Can be with compound as (Y
1-x-yGd
x) BO
3: EU
yOr Y
2-xO
3: EU
xMake the red fluorescence particle.In every kind of compound, the element Y part in the element Eu substituting group material, the Eu replacement amount x of Y is preferably 0.05≤x≤0.20.The replacement amount is unpractical greater than it, because brightness raising but brightness decrease speed are significantly accelerated.Equally, it also is unpractical that the replacement amount is lower than lower limit, descends because be used as the composition ratio of the Eu of luminescence center, can cause brightness decline and this fluorescer can not be used again.
Can use compound such as Ba
1-xAl
12O
19: Mn
xOr Zn
2-xSiO
4: Mn
xMake the green fluorescence particle.Ba
1-xAl
12O
19: Mn
xBe a kind ofly to come the compound of the element B a part in the substituting group material with element M n, and Zn
2-xSiO
4: Mn
xIt is a kind of compound that comes the element Zn part in the substituting group material with element M n.The Mn replacement amount x of Ba or Zn is preferably 0.O1≤x≤0.10.Reason is the same.
Can use compound such as Ba
1-xMgAl
10O
17: EU
xOr Ba
1-xMgAl
14O
23: EU
xMake the blue-fluorescence particle.In every kind of compound, the element B a part in the element Eu substituting group material.The Eu replacement amount x of Ba is preferably 0.03≤x≤0.25 in the last blue-fluorescence agent.The Eu replacement amount x of Ba is preferably 0.03≤x≤0.20 in the one blue-fluorescence agent of back, and reason is the same.
These color fluorescence particles can prepare (seeing Japanese Patent Application Publication flat 11-144625 number) with traditional firing method.And if the spherical fluorescent grain (not passing through process of lapping) that the water thermal synthesis obtains, then the brightness of fluorescer can be enhanced.To describe hydrothermal synthesis method in detail below.
Can be with ethyl cellulose or acrylic resin (constituting 0.1 to 10% printing ink) as the binding agent that mixes with fluorescent ink.Make solvent with alpha-terpineol or diethylene glycol (DEG)-butyl ether.In addition, can also make binding agent with high polymer such as PMA (polymethylacrylic acid) or PVA (polyvinyl alcohol), water or organic solvent such as diethylene glycol (DEG) or methyl ether are made solvent.
(hydro-thermal of fluorescent grain is synthetic)
Introduce method for optimizing one hydrothermal synthesis method that generates the fluorescent grain that is used for this embodiment front and back fluorescence coating below.Hydrothermal synthesis method is the synthetic and growing method of the compound of easily molten, the easy precipitation of utilizing high temperature, water under high pressure solution (hot water), easy reactivity worth.
(1) blue-fluorescence agent (1-1) Ba
1-xMgAl
10O
17: EU
x
At first, in the mixed liquor generative process, will be as raw-material barium nitrate Ba (NO
3)
2, magnesium nitrate Mg (NO
3)
2, aluminum nitrate Al (NO
3)
3, europium nitrate Eu (NO
3)
2By 1-X: 1: 10: the mole ratios of X (0.03≤X≤0.25) was mixed.Again it is dissolved in a kind of aqueous solvent and forms mixed liquor.At this moment, be fit to do aqueous solvent owing to ion exchange water or pure water are free from foreign meter.But can not be with the ion exchange water or the pure water that contain nonaqueous solvents (as methyl alcohol or ethanol).
In ensuing hydro-combination process, the basic aqueous solution (as ammonia spirit) is poured in the mixed liquor, generate hydrate, after hydrate is cleaned, under predetermined temperature (600 ℃), fire the scheduled time (10 hours), anhydrate and nitric acid to remove.
In ensuing hydro-thermal building-up process, to be put in the container of making by corrosion-resistant, heat-resisting gold or alloy platinum material through the fluorescent grain fired, aqueous medium (preferred ion exchanged water, but also can be with the mixture of ion exchange water and nonaqueous solvents such as methyl alcohol or ethanol) and a spot of aluminium powder.Use the under high pressure device such as the pressure cooker of heatable substance again, the hydro-thermal of under predetermined temperature (200-800 ℃) and predetermined pressure (3Mpa is to 70Mpa), carrying out the scheduled time (12 to 20 hours) in high-pressure bottle is synthetic.
Again with resulting powder in the reducing gas atmosphere of 5% hydrogen, 95% nitrogen (as contain), in predetermined temperature (1000 ℃) burning (heat treatment) scheduled time (2 hours) down.As a result, just obtained required blue-fluorescence particle Ba
1-xMgAl
10O
17: EU
x
Spherical in shape with the fluorescent grain that this hydrothermal synthesis method obtains, particle diameter (on average about 0.1-3.0 μ m) is less than with the resulting particle diameter of traditional solid reaction process.Its minor axis of shape of spherical explanation fluorescent grain and the ratio range of major axis are 0.9 to 1.0.Fluorescent grain is spherical in shape, although be not that the particle diameter of all most of fluorescent grains all needs in this scope.
(1-2) Ba
1-xMgAl
14O
23: EU
xThis blue-fluorescence agent can with different materials, with Ba
1-xMgAl
10O
17: EU
xSame mode is made.
Will be as raw-material barium hydroxide Ba (OH)
2, magnesium hydroxide Mg (OH)
2, aluminium hydroxide Al (OH)
3, europium hydroxide Eu (OH)
2By 1-X: 1: 14: the mole ratios of X (0.03≤X≤0.20) was mixed.Next with Ba
1-xMgAl
10O
17: EU
xSame mode is carried out hydro-combination process, hydro-thermal building-up process and combustion process, and the result obtains required blue-fluorescence particle Ba
1-xMgAl
14O
23: EU
xThe average grain diameter of these fluorescent grains is about 0.1-3.0 μ m, and is spherical in shape basically.
(2) green fluorescence agent (2-1) Zn
2-xSiO
4: Mn
x
In the mixed liquor generative process, will be as raw-material zinc nitrate Zn (NO
3), nitric acid silicon Si (NO
3)
2, manganese nitrate Mn (NO
3)
2By 2-X: 1: the mole ratios of X (0.01≤X≤0.10) is mixed.Again it is dissolved in ion exchange water and forms mixed liquor.
In hydro-combination process, the basic aqueous solution (as ammonia spirit) is added in the mixed liquor, generate hydrate.
In the hydro-thermal building-up process, hydrate and ion exchange water are put into the container of being made by corrosion-resistant, resistant to elevated temperatures gold or platinum.Again with a kind of device as pressure cooker, the hydro-thermal of under predetermined temperature (200-350 ℃) and predetermined pressure (1Mpa is to 35Mpa), carrying out the scheduled time (2 to 10 hours) in high-pressure bottle is synthetic.Again resulting granules is carried out the dry required green fluorescence particle Zm that just can obtain
2-xSiO
4: Mn
xThe average grain diameter of these fluorescent grains is about 0.1-3.0 μ m, and is spherical in shape.
(2-2)Ba
1-xAl
12O
19:Mn
x
In the mixed liquor generative process, will be as raw-material barium nitrate Ba (NO
3)
2, aluminum nitrate Si (NO
3)
2, manganese nitrate Mn (NO
3)
2By 1-X: 12: the mole ratios of X (0.01≤X≤0.10) is mixed.Again it is dissolved in ion exchange water and forms mixed liquor.
In hydro-combination process, the basic aqueous solution (as ammonia spirit) is added in the mixed liquor, generate hydrate.
In the hydro-thermal building-up process, hydrate and ion exchange water are put into the container of being made by corrosion-resistant, resistant to elevated temperatures gold or platinum.Again with a kind of device as pressure cooker, the hydro-thermal of under predetermined temperature (200-350 ℃) and predetermined pressure (1Mpa is to 30Mpa), carrying out the scheduled time (2 to 20 hours) in high-pressure bottle is synthetic.
After again resulting granules being carried out drying, just can obtain required green fluorescence particle Ba
1-xAl
12O
19: Mn
xThe average grain diameter of these fluorescent grains is about 0.1-3.0 μ m, and is spherical in shape.
(3) red fluorescence agent (3-1) (Y
1-x-yGd
x) BO
3: EU
y
In the mixed liquor generative process, will be as raw-material yttrium hydroxide Y
2(OH)
3, gadolinium hydroxide Gd
2(OH)
3, boric acid H
3BO
3, and europium hydroxide Eu
2(OH)
3Press 1-X-Y: X: 1: the mole ratios of Y (0.00≤X≤0.40,0.05≤Y≤0.20) is mixed.Again it is dissolved in ion exchange water and forms mixed liquor.
In hydro-combination process, the basic aqueous solution (as ammonia spirit) is added in the mixed liquor, generate hydrate.
In the hydro-thermal building-up process, hydrate and ion exchange water are put into the container of being made by corrosion-resistant, resistant to elevated temperatures gold or alloy platinum material.Again with a kind of device as pressure cooker, the hydro-thermal of under predetermined temperature (200-350 ℃) and predetermined pressure (1Mpa is to 30Mpa), carrying out the scheduled time (3 to 12 hours) in high-pressure bottle is synthetic.
Again resulting granules is carried out the dry required red fluorescence particle (Y that just can obtain
1-x-yGd
x) BO
3: EU
yThe average grain diameter of these fluorescent grains is about 0.1-3.0 μ m, and is spherical in shape.
(3-2)Y
2-xO
3:EU
x
In the mixed liquor generative process, will be as raw-material yttrium nitrate Y
2(NO
3)
2With europium nitrate Eu (NO
3)
2Mole ratios by 2-X: X (0.05≤X≤0.30) is mixed.Again it is dissolved in ion exchange water and forms mixed liquor.
In hydro-combination process, the basic aqueous solution (as ammonia spirit) is added in the mixed liquor, generate hydrate.
In the hydro-thermal building-up process, hydrate and ion exchange water are put into the container of being made by corrosion-resistant, resistant to elevated temperatures gold or platinum.Again with a kind of device as pressure cooker, the hydro-thermal of under predetermined temperature (200-350 ℃) and predetermined pressure (1Mpa is to 30Mpa), carrying out the scheduled time (3 to 12 hours) in high-pressure bottle is synthetic.
After again resulting granules being carried out drying, just can obtain required red fluorescence particle Y
2-xO
3: EU
xThe average grain diameter of these fluorescent grains is about 0.1-3.0 μ m, and is spherical in shape.This particle diameter and shape make it can form the fluorescence coating with fabulous luminescent properties.
Therefore, need not roll with silk screen printing by hydrothermal synthesis method and just can obtain fluorescent grain spherical, average grain diameter less (being about 0.1-3.0 μ m).Therefore the surface of this fluorescent grain does not have and rolls relevant oxygen impurities problem, thereby makes the brightness of fluorescent material and brightness decrease speed all be improved greatly.And, suppose that ultraviolet ray only passes very short distance and enter each and almost have only the luminous fluorescent grain of particle surface (apart from the several approximately sodium rice of particle surface), the fluorescent grain of fluorescence coating is less, average grain diameter is not more than 3.0 μ m if constitute, and then fluorescent grain is used for luminous whole surface area increase.So can make fluorescence coating keep high brightness.
The monocrystal that the resulting most fluorescent grain of hydrothermal synthesis method all is crystallization in hot water.This illustrates that each fluorescent grain does not almost have crystal boundary, does not therefore have oxygen impurities comparatively speaking.Therefore, the ultraviolet ray amount that absorbs in the oxygen impurities reduces, and therefore is easy to activate luminescence center.So the fluorescence coating that is made of these fluorescent grains has high brightness, the brightness decline problem that does not have oxygen impurities to bring.In addition, hydro thermal method can generate the fluorescent grain of submicron size.Can balancedly apply fluorescent material like this, and can improve the arranging density of fluorescer in the fluorescence coating, compare the brightness that can strengthen PDP100 with traditional PD Ps.
Preferably will be used for fluorescence coating 107R and 107G and back fluorescence coating 111R, 111G and 111B before all of PDP100 with the fluorescent grain that hydrothermal synthesis method obtains.Even and the fluorescent grain that hydrothermal synthesis method obtains is used for one of these fluorescence coatings, the brightness of this layer increases, the brightness of PDP100 also is enhanced.More particularly, because the brightness of blue-fluorescence agent is lower than the brightness of other color fluorescers, when sending the light of three kinds of colors simultaneously, colour temperature will descend.In order to overcome this problem, adopt signal processing to reduce the brightness of red and green fluorescence agent rather than blue-fluorescence agent traditionally, thus the colour temperature when regulating display white.And will be used for back fluorescence coating 111B with the blue fluorescent grain that hydrothermal synthesis method obtains, and can strengthen the brightness that blue light brightness and don't Bitsoft meaning reduces other colors, can make full use of the brightness of every kind of color.So improved the brightness of PDP100, the colour temperature when making display white simultaneously remains on high level.
(first experiment)
(No. 1 and No. 2 samples)
In No. 1 sample, be provided with red and green before fluorescence coating.In No. 2 samples, be provided with red before fluorescence coating.
In these two samples, utilize following fluorescent grain.
Red fluorescence agent: (Y, Gd) BO
3: EU
Green fluorescence agent: Zn
2SiO
4: Mn
Blue-fluorescence agent: BaMgAl
10O
17: EU
In addition, these two kinds of samples all are 42 inches PDPs, and wherein the height of barrier ribs 110 is 0.1mm, and distance such as box spacing between the adjacent barrier ribs 110 are 0.36mm.The discharge gas that is made of xenon (5%) and neon (95%) mist fills in the discharge space 122 under 66500Pa pressure.In addition, in the back fluorescence coating and preceding fluorescence coating of same color, use the fluorescent grain of producing by same manufacture method.
(No. 3 samples)
In No. 3 samples (reference sample), preceding fluorescence coating is not set, except this difference, No. 3 samples and No. 1 and No. 2 samples all mutually order with.
(experiment condition)
At first, regulate the input power supply, the initial colour temperature that makes each sample is 11000K.Show continuously after 5000 hours white, measure the colour temperature of each sample again.
(result and conclusion)
Experimental result is as shown in table 1.
Table 1
| Sample number | Preceding fluorescence coating color | Initial colour temperature (K) | Colour temperature after 5000 hours (K) |
| ????1 | Red green | ????11000 | ??????10000 |
| ????2 | Red | ????11000 | ???????9500 |
| ????3 | Do not have | ????11000 | ???????8000 |
By in the table as can be seen, the colour temperature that records above-mentioned No. 1 and No. 2 sample is 9500K or higher, even also descend too much after luminous 5000 hours.Especially, has the colour temperature of redness and No. 1 sample of green preceding fluorescence coating up to 10000K.
On the other hand, after 5000 hours, the colour temperature of No. 3 samples has dropped to 8000K.
Can obtain to draw a conclusion by experimental result.The blue back fluorescence coating that does not descend the not fastest with respect to brightness with respect to red and green back fluorescence coating is provided with preceding fluorescence coating, and the brightness decrease speed that can make ruddiness and green glow balances each other with the brightness decrease speed of blue light further.So the result who does can make the colour temperature of PDP not descend in time effectively.
Second embodiment
Below be with reference to the accompanying drawings to the explanation of second embodiment of the invention PDP.
The structure similar of the first embodiment PDP shown in the structure of the second embodiment PDP and Fig. 2 to 5, difference are first embodiment only for preceding fluorescence coating provides three kinds of colors, and below explanation is carried out around this difference.
Figure 10 is part perspective and the cutaway view of the second embodiment PDP.Adopt identical reference number at the structural detail that this it should be noted that with first embodiment is identical shown in Fig. 3, and no longer be described.In this PDP, with respect to fluorescence coating 107B before the minimum back fluorescence coating 111B of original intensity is provided with among back fluorescence coating 111R, 111G and the 111B.
When using known red fluorescence agent: (Y, Gd) BO
3: EU, green fluorescence agent: Zn
2SiO
4: Mn and blue-fluorescence agent: BaMgAl
10O
17: during EU, it is green, red and blue that three kinds of fluorescers are up to the minimum order of original intensity by original intensity.If the box spacing of back fluorescence coating 111R, 111G and 111B is identical, to be up to the minimum order of original intensity by original intensity also be green, red and blue to fluorescence coating after three kinds.Like this, if fluorescence coating is all luminous after three kinds, then the look equilibrium of PDP is destroyed, and colour temperature is low to moderate about 5500K.Be about 9000K or higher in order to ensure initial colour temperature, conventional practice is the brightness of the brightness of red fluorescence agent and green fluorescence agent to be used be restricted to about 55% and 76% respectively.When PDP when in time under the initial condition, in predetermined colour temperature, show, the actual use brightness of every kind of color fluorescer and the ratio of total brightness are referred to as " original intensity application factor " in the middle of hereinafter.In order comprehensively to utilize the brightness of low redness of original intensity application factor and green fluorescence agent,, should improve the original intensity of blue light so that when improving PDP100 brightness, keep colour temperature.This accomplish this point, fluorescence coating 107B before being provided with respect to back fluorescence coating 111B in a second embodiment, thus improved the original intensity of blue light.
The reason that improves the blue light original intensity with this structure is as described below.When PDP100 is provided with front and back fluorescence coating 107B and 111B, have only the situation of back fluorescence coating 111B to compare with PDP100, the ultraviolet ray that produces during discharge can more effectively be converted into visible light.
More particularly, if there is not preceding fluorescence coating 107B, then the ultraviolet part of discharge generation can be absorbed by front glass substrate 101, can't be used for luminous.
On the other hand, if preceding fluorescence coating 107B is arranged, the ultraviolet ray of discharge generation excites back fluorescence coating 111B and preceding fluorescence coating 107B simultaneously, makes it luminous.By effectively utilizing ultraviolet ray, the blue light brightness among the PDP100 is improved.Make the original intensity of red, green and blue light can access balance further.Therefore, regulate the brightness that box spacing or restriction utilize red and green fluorescence agent needn't resembling traditionally to be done, the colour temperature and the brightness that can improve PDP100 under the initial condition.At this, the fluorescent grain that more preferably preceding fluorescence coating 107B utilizes hydrothermal synthesis method to obtain is with the brightness of fluorescence coating 107B before the further enhancing.
In addition, preferably make the transmission of visible light of preceding fluorescence coating 107B be higher than the transmission of visible light of fluorescence coating 111B afterwards.This is because if the transmission of visible light of preceding fluorescence coating 107B is lower than the transmission of visible light of back fluorescence coating 111B, and visible possibly that then back fluorescence coating 111B sends can't be passed front panel, thereby causes that blue light brightness reduces.
Fluorescence coating 107B is thinner than back fluorescence coating 111B before making, and the pore volume of fluorescence coating 107B is greater than the pore volume of back fluorescence coating 111B before perhaps making, and the transmission of visible light of fluorescence coating 107B is higher than the transmission of visible light of back fluorescence coating 111B before just can making.Fluorescence coating 107B before for example forming greater than the fluorescent grain of back fluorescence coating 111B used fluorescent grain particle diameter with particle diameter can obtain bigger preceding fluorescence coating 107B pore volume.
Shown in Figure 11 is when preceding fluorescence coating 107B is made of three kinds of dissimilar fluorescent grains, under every kind of situation with respect to the relative blue light brightness of preceding fluorescence coating 107B thickness.
When current fluorescence coating 107B was made of the fluorescent grain (tabular, average grain diameter are 3.5 μ m) that obtains through burning, relative brightness increased always when bed thickness reaches 10 μ m and ends, and the relative brightness of this point reaches maximum 1.4.Afterwards, relative brightness descends.Therefore, the thickness of preceding fluorescence coating 107B is preferably 10 μ m or littler.So the result who does can reduce the fluorescent grain amount among the preceding fluorescence coating 107B, helps reducing cost.
When current fluorescence coating 107B was made of the fluorescent grain (sphere, average grain diameter are 2 μ m) that obtains through hydrothermal synthesis method, when bed thickness reached 6 μ m, relative brightness reached maximum 1.6.Afterwards, relative brightness descends.Equally, when current fluorescence coating 107B was made of the fluorescent grain (sphere, average grain diameter are 1 μ m) that obtains through hydrothermal synthesis method, when bed thickness reached 3 μ m, relative brightness reached maximum 1.6.Afterwards, relative brightness descends.Therefore, if the fluorescent grain made from hydrothermal synthesis method is compared with the situation of using the fluorescent grain that obtains through burning, it is about 20% that relative brightness can improve, the thickness of fluorescence coating 107B before also can reducing simultaneously.
This is because the fluorescent grain that hydrothermal synthesis method obtains has high brightness, and its spherical form has bigger light-emitting area area than plate shape fluorescent grain.At this moment, particle diameter is more little, and the brightness that obtains is high more.
Also have, the pore volume of preceding fluorescence coating 107B is preferably 50% or higher.
In the described example of this embodiment, fluorescence coating 111B provides preceding fluorescence coating for the back.And make its under predetermined colour temperature (as 9000K) when showing when the look equilibrium of regulating PDP100, can be for back fluorescence coating 111B and 111G but not the back fluorescence coating 111R of original intensity usage factor minimum provides preceding fluorescence coating.The result of making can improve less degree with initial colour temperature and the brightness of PDP100 like this.Perhaps can provide preceding fluorescence coating for all back fluorescence coating 111R, 111G, 111B.In this case, red before fluorescence coating enough thickness should be arranged reducing its transmission of visible light, and fluorescence coating answers thickness suitably so that the blue light brightness that the front and back fluorescence coating sends reaches maximum before blue.So regulate the brightness of each fluorescence coating, the initial colour temperature and the brightness that just can improve PDP100.
(second experiment)
(No. 4 to No. 7 samples)
In 4 to No. 6 samples, as shown in table 2, provide blue before fluorescence coating, the bed thickness of each sample and pore volume are all different.In No. 7 samples, provide blue and green before fluorescence coating.In addition, No. 4 to No. 7 samples all with second embodiment in PDP100 have same structure.
In addition, in 4 to No. 7 samples, the thickness of each back fluorescence coating is 30 μ m.Transmission of visible light is not more than 10%.
(reference sample)
In No. 8 samples (reference sample), be provided with the back fluorescence coating of three kinds of colors.
(experiment condition)
In 4 to No. 8 samples, show that every kind of color original intensity usage factor is 100% white, and colour temperature is measured.
(result and conclusion)
Experimental result is as shown in table 2.
(table 2)
| Sample number | Preceding fluorescence coating color | Preceding fluorescence coating thickness (μ m) | Preceding fluorescence coating pore volume (%) | The transmission of visible light (%) of preceding fluorescence coating | Initial colour temperature (K) |
| ????4 | Blue | ?????5 | ???????60 | ???????60 | ???10200 |
| ????5 | Blue | ?????5 | ???????80 | ???????80 | ???10500 |
| ????6 | Blue | ?????10 | ???????80 | ???????50 | ???10000 |
| ????7 | Blue, green | ?????5 | ???????80 | ???????80 | ????9000 |
| ????8 | Colourless | ?????- | ????????- | ????????- | ????6000 |
As shown in Table, have blue before No. 4 colour temperatures of fluorescence coating to No. 6 samples all surpass 10000K.At this moment, transmission of visible light is high more, and colour temperature is high more.Especially, in transmission of visible light was 80% No. 5 samples, colour temperature was up to 10500K.In No. 6 samples, low this reason of the transmission of visible light that causes because bed thickness is thicker, its initial colour temperature is lower than No. 4 and No. 5 samples slightly, but still up to 10000K.
In No. 7 samples, colour temperature is lower than the colour temperature (9000K) of 4 to No. 6 samples slightly, but still is practical.
On the other hand, the color temperature value of No. 8 samples is very low is 6000K.This low colour temperature has been destroyed the look equilibrium owing to the fluorescence coating brightness of blue back is lower and has been caused.
The change pattern
In the described example of first and second embodiment, barrier ribs 110 is bar shaped, and barrier ribs 110 also can be crooked shape, perhaps is arranged in the grid pattern.
Although by example the present invention has been carried out comprehensive description with reference to relevant drawings, it should be noted that various changes and modification all are conspicuous for those of ordinary skill in the art.Therefore, unless this change and modification have broken away from scope of the present invention, otherwise its structure all should be included.
Claims (26)
1. plasma display comprises:
Have the front panel of a preceding substrate and at least one pair of electrode, described at least one pair of electrode arrangement is on the first type surface of preceding substrate; With
Rear board with fluorescence coating behind back substrate, barrier ribs and at least one group three look, back fluorescence coating be subjected to discharge between at least one pair of electrode in the front panel ultraviolet the exciting that produced and send redness, green and blue visible light, barrier ribs is arranged on the first type surface of back substrate at intervals, behind three looks in the fluorescence coating after different one fluorescence coating be formed on the back substrate first type surface in the interval between the adjacent barrier ribs, rear board is relative with front panel, be provided with barrier ribs therebetween
Wherein front panel comprises that at least one is formed at the preceding fluorescence coating on the preceding substrate main surface, fluorescence coating before this at least one: (a) at least one the back fluorescence coating that descends in time outside the fastest back fluorescence coating with brightness in the fluorescence coating behind man-to-man relation and the red, green and blue look is oppositely arranged, and reaches the light that (b) relative with at least one back fluorescence coating sends same color.
2. plasma display according to claim 1, wherein fluorescence coating is the red preceding fluorescence coating that forms with respect to fluorescence coating after the redness before at least one.
3. plasma display according to claim 1, wherein at least one preceding fluorescence coating comprises respectively with respect to fluorescence coating and green preceding fluorescence coating before the redness of fluorescence coating after the redness and the fluorescence coating formation of green back.
4. plasma display according to claim 1, wherein the transmission of visible light of fluorescence coating is higher than at least one transmission of visible light of back fluorescence coating relatively before at least one.
5. plasma display according to claim 4, wherein fluorescence coating is thinner than at least one relative back fluorescence coating before at least one.
6. plasma display according to claim 5, wherein fluorescence coating is made of the fluorescent grain that average diameter is no more than 3.5 μ m before at least one, and
Fluorescence coating is not thicker than 10 μ m before at least one.
7. plasma display according to claim 4, wherein the pore volume of at least one preceding fluorescence coating is greater than the pore volume of at least one back relatively fluorescence coating.
8. plasma display according to claim 1, wherein fluorescence coating is formed on the preceding substrate main surface part that at least one pair of electrode also arranges before at least one.
9. plasma display according to claim 1, the gap size between the wherein adjacent barrier ribs is because the difference of fluorescence coating brightness and difference after being formed at therebetween three looks.
10. plasma display according to claim 1 is made of spherical fluorescent grain comprising the one at least of the front and back fluorescence coating in plasma display.
11. plasma display according to claim 10, wherein fluorescent grain is made by hydrothermal synthesis method.
12. display unit with PDP, comprise the described plasma display of claim 1 and be connected in the plasma display at least one pair of electrode, by electrode application voltage being driven the display driver circuit of plasma display to this.
13. a plasma display comprises:
Comprise the front panel of a preceding substrate and at least one pair of electrode, described at least one pair of electrode arrangement is on the first type surface of preceding substrate; With
The rear board that comprises fluorescence coating behind back substrate, barrier ribs and at least one group three look, back fluorescence coating be subjected to discharge between at least one pair of electrode in the front panel ultraviolet the exciting that produced and send redness, green and blue visible light, barrier ribs is arranged on the first type surface of back substrate at intervals, behind three looks in the fluorescence coating after different one fluorescence coating be formed on the back substrate first type surface in the interval between the adjacent barrier ribs, rear board is relative with front panel, be provided with barrier ribs therebetween
Wherein front panel comprises that at least one is formed at the preceding fluorescence coating on the preceding substrate main surface, fluorescence coating before this at least one: (a) with man-to-man relation with produce under predetermined colour temperature when plasma display its original intensity application factor when showing behind the red, green and blue look in the fluorescence coating behind outside the minimum back fluorescence coating fluorescence coating be oppositely arranged, reach the light that (b) relative with at least one back fluorescence coating sends same color.
14. plasma display according to claim 13, wherein at least one preceding fluorescence coating comprises respectively with respect to fluorescence coating and blue preceding fluorescence coating before the green of fluorescence coating after the green and the fluorescence coating formation of blue back.
15. plasma display according to claim 13, wherein fluorescence coating is the blue preceding fluorescence coating that forms with respect to fluorescence coating after the blueness before at least one.
16. plasma display according to claim 13, wherein the transmission of visible light of fluorescence coating is higher than at least one transmission of visible light of back fluorescence coating relatively before at least one.
17. plasma display according to claim 16, wherein fluorescence coating is thinner than at least one relative back fluorescence coating before at least one.
18. plasma display according to claim 17, wherein fluorescence coating is made of the fluorescent grain that average diameter is no more than 3.5 μ m before at least one, and
Fluorescence coating is not thicker than 10 μ m before at least one.
19. plasma display according to claim 16, wherein the pore volume of at least one preceding fluorescence coating is greater than the pore volume of at least one back relatively fluorescence coating.
20. plasma display according to claim 13, wherein fluorescence coating is formed on the preceding substrate main surface part that at least one pair of electrode also arranges before at least one.
21. plasma display according to claim 13, the gap size between the wherein adjacent barrier ribs is because the difference of fluorescence coating brightness and difference after being formed at therebetween three looks.
22. plasma display according to claim 13 is made of spherical fluorescent grain comprising the one at least of the front and back fluorescence coating in plasma display.
23. plasma display according to claim 22, wherein fluorescent grain is made by hydrothermal synthesis method.
24. plasma display according to claim 23, wherein fluorescent grain is the blue-fluorescence particle.
25. display unit with PDP, comprise the described plasma display of claim 13 and be connected in the plasma display at least one pair of electrode, by electrode application voltage being driven the display driver circuit of plasma display to this.
26. a plasma display comprises:
Comprise the front panel of a preceding substrate and at least one pair of electrode, described at least one pair of electrode arrangement is on the first type surface of preceding substrate; With
The rear board that comprises fluorescence coating behind back substrate, barrier ribs and at least one group three look, back fluorescence coating be subjected to discharge between at least one pair of electrode in the front panel ultraviolet the exciting that produced and send redness, green and blue visible light, barrier ribs is arranged on the first type surface of back substrate at intervals, behind three looks in the fluorescence coating after different one fluorescence coating be formed on the back substrate first type surface in the interval between the adjacent barrier ribs, rear board is relative with front panel, be provided with barrier ribs therebetween
Wherein front panel comprises at least one group of three looks preceding fluorescence coating that is formed on the preceding substrate main surface, fluorescence coating before this three look: (a) be oppositely arranged with fluorescence coating behind the red, green and blue look in man-to-man relation and the rear board, and (b) with relative back fluorescence coating send same color light and
Be lower than the transmission of visible light of fluorescence coating before other two kinds with brightness relative its transmission of visible light of preceding fluorescence coating of the original intensity application factor is minimum in the slowest back fluorescence coating or red, the green and blue back fluorescence coating back fluorescence coating that descends in time.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP357229/1999 | 1999-12-16 | ||
| JP35722999 | 1999-12-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1319867A true CN1319867A (en) | 2001-10-31 |
Family
ID=18453052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00137369A Pending CN1319867A (en) | 1999-12-16 | 2000-12-15 | Plasma indication panel |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6603448B2 (en) |
| KR (1) | KR20010062520A (en) |
| CN (1) | CN1319867A (en) |
| TW (1) | TW494427B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346442C (en) * | 2004-05-28 | 2007-10-31 | 三星Sdi株式会社 | Plasma display panel |
| CN101165838B (en) * | 2006-10-16 | 2012-06-20 | Lg电子株式会社 | Plasma display panel |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002083570A (en) * | 2000-09-08 | 2002-03-22 | Sumitomo Chem Co Ltd | Vacuum ultraviolet excitation-emissive element |
| JP2002180042A (en) * | 2000-12-13 | 2002-06-26 | Sumitomo Chem Co Ltd | High-luminance phosphor layer |
| JP4507470B2 (en) * | 2001-07-13 | 2010-07-21 | 株式会社日立製作所 | Plasma display panel display device |
| WO2004008239A1 (en) * | 2002-07-17 | 2004-01-22 | Bridgestone Corporation | Image display |
| JP4625642B2 (en) * | 2004-02-19 | 2011-02-02 | 日立プラズマディスプレイ株式会社 | Display device |
| KR100581905B1 (en) * | 2004-03-25 | 2006-05-22 | 삼성에스디아이 주식회사 | Plasma display panel |
| KR100647670B1 (en) * | 2004-12-16 | 2006-11-23 | 삼성에스디아이 주식회사 | Plasma display panel |
| KR100708691B1 (en) * | 2005-06-11 | 2007-04-17 | 삼성에스디아이 주식회사 | Method for driving plasma display panel and plasma display panel driven by the same method |
| TWI333581B (en) * | 2005-12-23 | 2010-11-21 | Au Optronics Corp | Fluorescent flat lamp and structure of the same |
| KR100780679B1 (en) * | 2006-05-30 | 2007-11-30 | 엘지전자 주식회사 | Plasma display device |
| US9346999B2 (en) * | 2011-09-29 | 2016-05-24 | General Electric Company | Method of forming efficient phosphor powders |
| KR102216417B1 (en) * | 2013-06-28 | 2021-02-17 | 인텔 코포레이션 | Selective epitaxially grown iii-v materials based devices |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3013470B2 (en) * | 1991-02-20 | 2000-02-28 | ソニー株式会社 | Image display device |
| JP3271083B2 (en) * | 1992-04-21 | 2002-04-02 | ソニー株式会社 | Plasma address electro-optical device |
| JPH08106080A (en) * | 1994-10-05 | 1996-04-23 | Sony Corp | Picture display device |
| JP3481721B2 (en) | 1995-04-07 | 2003-12-22 | 三菱電機株式会社 | Planar discharge light emitting device |
| JP3739163B2 (en) * | 1997-03-31 | 2006-01-25 | 三菱電機株式会社 | Plasma display panel |
| JP3546987B2 (en) | 1997-12-25 | 2004-07-28 | 松下電器産業株式会社 | Plasma display panel and method of manufacturing plasma display panel |
| JP3220081B2 (en) | 1998-01-20 | 2001-10-22 | 松下電器産業株式会社 | Plasma display panel |
-
2000
- 2000-12-11 US US09/734,509 patent/US6603448B2/en not_active Expired - Fee Related
- 2000-12-15 TW TW089126929A patent/TW494427B/en not_active IP Right Cessation
- 2000-12-15 CN CN00137369A patent/CN1319867A/en active Pending
- 2000-12-16 KR KR1020000077436A patent/KR20010062520A/en not_active Application Discontinuation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346442C (en) * | 2004-05-28 | 2007-10-31 | 三星Sdi株式会社 | Plasma display panel |
| CN101165838B (en) * | 2006-10-16 | 2012-06-20 | Lg电子株式会社 | Plasma display panel |
Also Published As
| Publication number | Publication date |
|---|---|
| US6603448B2 (en) | 2003-08-05 |
| KR20010062520A (en) | 2001-07-07 |
| US20010004250A1 (en) | 2001-06-21 |
| TW494427B (en) | 2002-07-11 |
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